from tkinter import *

master =Tk()

list1=[
('one',1),
('two',2),
('three',3),
        ]


v=IntVar()
v.set(1)

def cd():
    print('var',v.get())

for i,j in list1:
    a=Radiobutton(master,text=i,variable=v,value=j,command=cd).pack(anchor=W)


mainloop()
